Improvement in looms



. GEORGE CROMPTON AND HORACE WYMAN,

OF WORCESTER, MASS.

IMPROVEMENT IN Looms.

Specification forming part of Letters Patent No. l 56,630, datedNovember 10, 1874; application filed August 29, 1874.

ism of fancy looms, and the novel features of V the construction will besufficiently well understood from the specific description of themechanism without general description with respect thereto.

The drawing represents that part of the frame-work in which the patternmechanism is mounted.

Figure 1 is a side elevation of the mechanism. Fig. 2 is an end view ofthe same. Fig. 3 is a plan of the mechanism. Fig. 4 is a rear viewthereof.

a denotes the frame; 12, the pattern-cylinder for the harnesses, and cthe pattern-cylinder for the drop-boxes. The shaft of the cylinder 1) isjournaled in suitable stationary bearings, and carries at one end anotched wheel, (1, which is intermittently turned by pins 6 f, extending from a wheel, 9, on a horizontal shaft, h. This shaft it carriesa bevel-gear, t, meshing into and driven by a bevel-gear, k, on avertical shaft, Z, this latter shaft bearing at its foot a bevel-wheel,m, meshing into and driven by a bevel-pinion, n, on the main shaft, 0.The gear-connection is such that the pin-wheel g is turned ahalf-rotation at each complete rotation of the shaft 0, but, as thepin-whee1 has two pins, the pattern-cylinder is actuated at eachrotation of the shaft 0. The jacks or levers, through which thepattern-cylinder designates the harness-levers to be raised or lowered,extend through guide-slots p, and normally rest upon or over thepattern-cylinder, being directly raised by the pins of thepatterncylinder, or the rolls of the patternchain, or other indicatingmechanism.

The pattern-cylinder c for the drop-boxes is shown as mounted upon astud-pin, r, projecting from the frame a, this shaft carrying a star ornotched wheel, 8, which is intermittently actuated to turn the cylinderby a pin, a, eX- tending from a pin-wheel, v, fixed on the shaft h, thatcarries the other pin-wheel g to actuate the other pattern-cylinder. Thepin a turns the pattern-cylinder to change the drop-boxes at one end ofthe lathe, and therefore operates said cylinder only at every otherrotation of the shaft 0, or only once during the rotation of the shafth, whereas the pin-wheel 9 turns the other pattern-cylinder twice duringeach rotation, or to form a new shed at each pick.

w to denote two of the drop-box arms, resting-upon the pattern-cylinder,and raised at proper times by the pins projecting from the cylinder. Asuitable stop-wheel, a, is placed at the end of the pattern-cylindershaft 2 opposite the wheel 01, a suitable roll at the end of aspring-lever, y, slipping into the recesses of the stop-wheel to retainthe cylinder in position after eachrotative movement thereof.

The vertical shaft 1 is made in two parts, connected by clutch-wheels a11 the wheel a being fast on the lower part of the shaft, and the wheelb being splined to the upper part of the shaft, but sliding thereon. Thehub of the wheel I) has a peripheral groove, 0 into which a crank-pin, dextends from a shaft, 0 this shaft having a handle, f, by which theshaft and its crank-pin are operated to raise the clutch-wheel b anddisconnect the upper part of the shaft 1, through which bothpatterncylinders are actuated from the lower part of said shaft-thatwhich is operated by the latheshaft. When so disconnected the shaft maybe turned to operate the pattern mechanisms for inspection or otherpurpose by a handle, t, at the end of the shaft, or the lathe-shaft maybe turned back without affecting the shed or the position of thedrop-boxes.

The pin-wheel, that actuates the drop-box pattern-cylinder, is shown ascarrying two pins, one of which is so short as not to enter the notchesof the wheel .5,- but sometimes it is de sirable to move thepattern-cylinder c at each movement of the other pattern-cylinder, b, orat each change of shed, for which purpose the parts are so arranged thatboth pins may be brought into the plane of the wheel 8 tointermit-tently and successively operate the cylin' der 0. To effectsuch connection the wheel 3 is shown as adjustable on the shaft 1", theshaft being made with two notches, into one of which the hub-screwenters to fasten the Wheel in position to be actuated by one pin only,and into the other, 9 of which the screw enters to fasten the wheel inposition to be actuated by each pin.

We claim- 1. The combination of the shaft 1, driven from the shaft 0,and the shaft h, driven by the shaft 1, and carrying the mechanism forintermittently actuating both the pattern-cylinder connected with theshedding mechanism, and the pattern-cylinder connected with the drop-boxmechanism, substantially as described.

2. In combination with the shaft h, driven from the shaft 0, to operateboth pattern-cylinders, the mechanism for disconnecting such shafts h 0to permit the two cylinders to be conjointly operated independently fromthe shaft 0, or the shaft 0 to be operated independ ently from the shafth that drives the pattern mechanism.

3. In combination with the pattern-c linder I), actuated by the two pinsof of the W g and with the pattern-cylinder c, the pin-wheel '0, havingtwo pins, the wheel and pins being made and arranged for the action ofone'pin alone, or of both pins, substantially as described.

GEO. OROMPTON.

HORACE WYMAN. Witnesses:

A. A. GORDON, J. A. WARE.

